I have a hard time believing that the school would knowingly schedule events for the day when ladies should be in classes. I would highly recommend double checking your information and making sure the events aren't actually in the evening, rather than during regular class hours. If this information is correct and you truly do have a conflict, then you need to contact your greek life office immediately so you can find a resolution for your situation.

You are not the only rushee who has class. Like virtually every rushee is going to have class at one time or another during that day. Either you or they have made a mistake. There would never be a scenario where you would be put in a position of having to drop out of rush or skip class. And if in the completely bizarre scenario where this would be true, you should go to class. A Greek system that doesn't respect the reason for you to be in school is a bad idea and should be avoided. But my guess is you've misunderstood what's going on. Just call and get clarification.

__________________"Traveling - It leaves you speechless, then turns you into a storyteller. ~ Ibn Battuta